As a hapless Earthling, you must climb aboard a UFO, hatch alien eggs, explore ancient ruins and try to find your way back home. The puzzles are straightforward, and the ending surprisingly abrupt, but it's a pleasant little game.
This "Marooned" appears to be unique among several other games that use the same title.
Much of the information comes from an ad in the June 1985 issue of RAINBOW Magazine.
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I've found an ad in Rainbow magazine, June 1985, which states that this game is by Steve Hartford, and published by Saguaro Software.
... to be more exact, it's on page 161.